RE: [PATCH v3] input/misc: new ADXL345/346 driver

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Dmitry Torokhov wrote on 2010-07-01:
> On Fri, Jun 25, 2010 at 02:59:24PM +0100, Hennerich, Michael wrote:
>> Dmitry Torokhov wrote on 2010-06-25:
>>> Hi Mike, Michael,
>>>
>>> On Tue, Oct 20, 2009 at 04:40:39AM -0400, Mike Frysinger wrote:
>>>> From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
>>>>
>>>> This is a driver for the ADXL345/346 Three-Axis Digital
>>>> Accelerometers.
>>>>
>>>
>>> As I mentioned in one of the threads I decided to pull 3-axis
>>> acceleromenetrs into input and I am finally getting around to
>>> apply the patch... However I messed a bit with it so I was
>>> wondering if someone could give it a short spin to see if I broke it or not.
>>>
>>> Thanks!
>>>
>>
>> Hi Dmitry,
>>
>> Thanks for merging this driver.
>> I gave it a quick spin. And there is one issue.
>> There is a code path that is taken with the mutex held, which is
>> also trying to acquire the mutex.
>>
>> Take a look at
>>
>> adxl34x_input_close() -> __adxl34x_disable() or
>> adxl34x_disable() -> __adxl34x_disable()
>>
>> I think __adxl34x_disable() should not acquire the mutex!
>>
>
> Yes, indeed it shoudl not have. I fixed it up and applied the patch.
> Could you also please try the following patch - hopefully it also works
> ;)
>
> Thank you in advance.
>

Hi Dmitry,

A few minor things.
See patch below.

-adxl34x is on startup not disabled - otherwise user must reset disable sysfs
hook before the driver delivers any data.
-restore erroneously dropped line in adxl34x_calibrate_store()
-fix typo in adxl34x-i2c.c (l versus 1)

Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>

 drivers/input/misc/adxl34x-i2c.c |    6 +++---
 drivers/input/misc/adxl34x.c     |    3 ++-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/input/misc/adxl34x-i2c.c b/drivers/input/misc/adxl34x-i2c.c
index b1b8df3..0779724 100644
--- a/drivers/input/misc/adxl34x-i2c.c
+++ b/drivers/input/misc/adxl34x-i2c.c
@@ -58,14 +58,14 @@ static int adxl34x_i2c_read_block(struct device *dev,
        return 0;
 }

-static const struct adxl34x_bus_ops adx134x_smbus_bops = {
+static const struct adxl34x_bus_ops adxl34x_smbus_bops = {
        .bustype        = BUS_I2C,
        .write          = adxl34x_smbus_write,
        .read           = adxl34x_smbus_read,
        .read_block     = adxl34x_smbus_read_block,
 };

-static const struct adxl34x_bus_ops adx134x_i2c_bops = {
+static const struct adxl34x_bus_ops adxl34x_i2c_bops = {
        .bustype        = BUS_I2C,
        .write          = adxl34x_smbus_write,
        .read           = adxl34x_smbus_read,
@@ -88,7 +88,7 @@ static int __devinit adxl34x_i2c_probe(struct i2c_client *client,
        ac = adxl34x_probe(&client->dev, client->irq, false,
                           i2c_check_functionality(client->adapter,
                                                   I2C_FUNC_SMBUS_READ_I2C_BLOCK) ?
-                               &adx134x_smbus_bops : &adx134x_i2c_bops);
+                               &adxl34x_smbus_bops : &adxl34x_i2c_bops);
        if (IS_ERR(ac))
                return PTR_ERR(ac);

diff --git a/drivers/input/misc/adxl34x.c b/drivers/input/misc/adxl34x.c
index 2706ea0..756f4d0 100644
--- a/drivers/input/misc/adxl34x.c
+++ b/drivers/input/misc/adxl34x.c
@@ -514,6 +514,7 @@ static ssize_t adxl34x_calibrate_store(struct device *dev,
        ac->hwcal.y -= (ac->saved.y / 4);
        ac->swcal.y = ac->saved.y % 4;

+       ac->hwcal.z -= (ac->saved.z / 4);
        ac->swcal.z = ac->saved.z % 4;

        AC_WRITE(ac, OFSX, (s8) ac->hwcal.x);
@@ -724,7 +725,7 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
        pdata = &ac->pdata;

        ac->input = input_dev;
-       ac->disabled = true;
+       ac->disabled = false;
        ac->dev = dev;
        ac->irq = irq;
        ac->bops = bops;



Greetings,
Michael

Analog Devices GmbH      Wilhelm-Wagenfeld-Str. 6      80807 Muenchen
Sitz der Gesellschaft Muenchen, Registergericht Muenchen HRB 4036 Geschaeftsfuehrer Thomas Wessel, William A. Martin, Margaret Seif

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